Road-scraper.



P. E. CLARK.

ROAD SCRAPER.

APPLICATION FILED JAN. :0. 1918.

1,290,088. Patented Jan. 7,1919.

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INVENTOR WITNESSES ATTORNEY P. E. CLARK.

ROAD SCRAPER.

APPLICATION FILED JAN. 10. 19:8.

Patented Jan. 7, 1919.

3 SHEETSSHEET 2 WITNESSES Y E N R 0 T T A P. E. CLARK.

ROAD SCRAPER.

APPLICATION FILED 1mm. 191a.

Patented Jan. 7, 1919.

3 SHEETS-SHEET 3.

A. :i ======l= INVENTOR WITNESSES ATTOR N EY 1m: uaRmS puns co. Puamumu. wAsnmcmm u c,

PAUL n. CLARK, or ALGONA, IOWA.

ROAD-SGRAPER.

Application filed January 10, 1918.

To all whom it may concern:

Be it known that I, PAUL E. CLARK, a citizen of the United States, residing at Algona, in the county of Kossuth and btate of Iowa, have invented certain new and useful Improvements in Road-Scrapers, of which the following is a specification.

This invention relates to an improved road scraper and the principal object of the invention is to provide a scraper and improved frame construction and further having an improved manner of mount ng the road engaging blade, the blade being so constructed that it may be vertically adjusted and releasably held in the ad usted position.

Another object of the invention is to so construct this machine that the frame thereof will be very strong and durable.

Another object of the invention is to provide an improved rear truck construction and improved means for connecting the rear truck with the center bar, of the carriage.

This invention is illustrated in the accompanying drawings, wherein Figure 1 is a top plan view of the improved scraper.

Fig. 2 is a side elevation of the improved scraper.

Fig. 3 is a longitudinal sectional view through the improved scraper, and

Fig. 4 is a top plan view of the scraper in an adjusted position, certain portions of the machine being shown in section.

This road scraper is provided with a carriage having a forward truck formed as an arch or a bridge having its end portions forming spindles for the forward wheels 11 and provided with a stem or standard 12 which stem extends through the block 13 and also through the forward end of the reach pole 14 and bolster 15 carried thereby. This block 13 carries a collar 16 which extends about the block and has its free end portion bent to provide hinge cars 17 with which the straps forming the clevis 18 will be pivotally connected through the medium of the bolt or pivot pin 19. It will thus be seen that the stem 12 serves as means for permitting side swing of the clevis.

The reach pole 14 is of a channel iron construction and is provided adjacent its forward end with a bearing bracket 20 through which the stem 12 passes as shown in Fig. 3, the bearing bracket being con- Specification of Letters Patent.

Patented J an. '7, 1919.

Serial No. 211,243.

nected with the reach pole by bolts or other fasteners 21 which fasteners in addition to holding the bearing bracket in place, serve to hold the bolster 15 in place. This reach pole extends rearwardly and is pivotally connected with a cross bar 22 of the rear truck by bolt or pin 22. This cross bar 22 is pivotally connected with a short supporting arm 23 extending rearwardly from a point beneath the rear end of the reach pole 14 and is pivotally connected with a cross strip 24. Plates 25 are pivotally connected with the end portions of the cross bars 22 and cross strips 24 and carry stub axles 26 to rotatably mount the rear supporting Wheels 27. A yoke 28 rests upon the side flanges of the reach pole 14 and is held in place by the latching pin 29 and engaged y the guiding strip 30 and has its arms extending rearwardly and connected with rack plates 31 by bolts 32. These rack plates 31 extend beneath the arms of the yoke to provide hangers 33 and have their rear end portions cut and bent inwardly to provide inwardly extending flanges with which the cross bar 34 will be connected. Standards 35 are connected with the hangers 33 by fasteners 36 and have their lower end portions bent to provide arms 37 extending rearwalrdly? and pivotally connected with side plates 25. n

The scraping blade 38 extends transversely of the frame or carriage in front of the drivers seat 39, the standard 40 of which is.

secured upon the rear end of the reach pole 14 by bolts 40 connecting the reach pole 14 with the arm 23 and is provided with a removable road engaging strip or shoe 41 so that this shoe may be removed and sharp ened or a new one put in place when necessary. The supporting arms 42 of this scraping blade are connected with the standards 35 adjacent their lower ends by the links 43 and are engaged adjacent their upper ends by the arms 44 of the latch levers 45 so that when the latch levers are moved, the scraping blade may be raised or lowered according to the direction in which the levers are moved. The locking pins 46 of these levers will engage the rack teeth 47 of the rack plates 31 thus locking the levers in the adjusted position and retaining the blade at the desired elevation. It will thus be seen that this scraping blade may be held either out of engagement with the ground as shown in Figs. 2 and 3 or may be held to engage the ground and cut into the roadbed the desired amount. This machine is therefore so constructed that the scraping blade may be easily brought into and out of engagement with the ground as found necessary by the driver Without it being necessary for him to leave the seat. It will be further noted that when it is desired to have the blade extend diagonally of the road as shown in Fig. 4, instead of in the position shown in Fig. 1, the latching pin 29 will be released through the medium of the lever 48 and the frame of the machine can then be s\\"ung to one side of the reach pole thus positioning the blade at the desired angle.

lVhat is claimed is 1. A road scraping machine comprising a carriage including a reach pole, a forward truck connected with the reach pole, a rear truck, the rear truck comprising a cross bar pivotally connected with the reach pole, a yoke resting upon the reach pole and provided with arms extending rearwardly upon opposite sides of the reach pole, rack plates rigidly connected with the arms of the bridge and with the cross bar, an arm rigidly connected with the reach pole and extending rearwardly of the cross bar, a cross strip pivotally connected with the rearwardly extending arm, side plates connected with the cross bar and cross strip, supporting wheels rotatably connected with the side plates, standards connected with the rack plates and with the side plates, a scraping blade, arms for the scraping blade, links connected with the standards and with the arms of the scraping blade, and levers pivotally connected with the upper end portions of the standards and having arms eX- tending forwardly and pivotally connected with the upper end portions of the arms of the scraping blade, the locking pins of the latch levers having engagement with the teeth of the rack plates.

2. A road scraping machine comprising a carriage having a reach pole, a forward truck connected with the reach pole, a yoke connected with the reach pole and having its arnis'extending rearwardly upon opposite sides of the reach pole, rack plates connec ed with the arms of the yoke, a cross bar connected with the rack platesand extending beneath the bridge, side plates connected. with the cross bar, supporting wheels connected with the side plates, standards connected with the rack platesand side plates, a scraping blade, links pivotally connected with the scraping blade and Withthe stand ards, and latch levers pivotallymounted in operative relation to the rack plates and pro vided with arms pivotally connected with the arms of the scraping blade.

In testimony whereof I afiix my signature in the presence of two witnesses. QPAUL E. CLARK.

*VVitnesses i S. W. OROWELL, H. L. GrLMooR.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, I). c. 

